APA (7e ed.) Bronvermelding

Luna, T. W. (1976). Environmental education and geography. University of the Philippines Press.

Chicago (17e ed.) Bronvermelding

Luna, Telesforo W. Environmental Education and Geography. Quezon City: University of the Philippines Press, 1976.

MLA (9e ed.) Bronvermelding

Luna, Telesforo W. Environmental Education and Geography. University of the Philippines Press, 1976.